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'Europe at the Last Ice Age' Based on Initial Data Compilations

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Faculty of Environmental Sciences Institute for Cartography Master Thesis Cross-Media 3D Cartography of ‘Europe at the Last Ice Age’ Based on Initial Data Compilations submitted by Mara Jaunsproge born on 26.02.1987 in Saldus, Latvia submitted for the academic degree of Master of Science (M.Sc.) Date of Submission 29.09.2013 Supervisors Prof. Dr. Manfred F. Buchroithner, Dipl.-Geogr. Benjamin Schröter Institute for Cartography Faculty of Environmental Sciences Institute for Cartography Cross-Media 3D Cartography of ‘Europe at the Last Ice Age’ Based on Initial Data Compilations The Last Ice Age in Europe was at its peak about 20 000 years ago. At that time in the Northern part of Europe, many areas were covered with ice as much as 3km thick. The mountainous regions of the Southern part of Europe, for example the Alps, Balkans, and Pyrenees, were covered with thick ice sheets. During the Last Glacial Maximum (LGM) the sea level was much lower than today indicating that there might have been a connection between England and mainland of Europe. The findings of the most recent research have so far never been combined to create a de- tailed Ice Age map of Europe. In school atlases and on wall maps one still finds more or less the state of knowledge from immediately after World War II. Thus, based on a collection of the most detailed data about the horizontal and vertical extent of the Last Ice Age in Europe (of which about 50 % currently exists) it is possible to gener- ate a geodata base which can subsequently serve as a basis for cross-media carto- graphic presentations to be demonstrated by the examples listed below. The tasks comprise: Search and process missing information about the Last Ice age in Europe; Combine the information about ice coverage in Europe during the Last Ice Age and visualize it using different display media. Output in the form of cartographic products are: a paper map of Europe at a scale of 1:5,000,000 a map sheet of the Alps at a scale of 1:1,000,000 in the form of a classical hill-shaded paper map The combined data might then be used as a source to develop other types of visual representation of the Last Ice Age in Europe. The major findings have to be presented in the form of an A0 color poster. Supervisors: Prof. Dr. Manfred Buchroithner, Dipl.-Geogr. Benjamin Schröter Delivered: April 1, 2013 Date of submission: September 29, 2013 Prof. Dr. Manfred Buchroithner Statement of Authorship Herewith I declare that I am the sole author of the thesis named „Cross-Media 3D Cartography of ‘Europe at the Last Ice Age’ Based on Initial Data Compilations“ which has been submitted to the study commission of geosciences today. I have fully referenced the ideas and work of others, whether published or un- published. Literal or analogous citations are clearly marked as such. Dresden, 29.09.2013 Mara Jaunsproge Acknowledgements I would like to say “thank you” to my supervisor Prof. Dr. Manfred Buchroithner who didn’t just provide me with a great opportunity to work on an exciting project but also guided me with helpful advice throughout all the working process. Also my gratitude goes to the initial working team of this project (Christin Abel, Anne-Kathrin Becker, Nils Fleischer and Anne Lange) that participated in data search, compilation and digitization. And last but not least, I would like to say thank you to all the young soon-to-be car- tographers from TU Dresden who never refused to help me no matter how ridiculous my problems were. Abstract During the Pleistocene (1.8 million years BP [before present] to 10 000 years BP) several glacial and interglacial periods occurred. The last glacial period of the Pleis- tocene, often referred to as the ‘last Ice Age’, reached its glacial maximum about 20 000 years ago. A data base containing detailed information about this time period in Europe has been created. In the region of Europe, there are several maps and other data sources about the last Ice Age. Large ice sheets covered Scandinavia, the British Isles, Iceland, the Alps, Pyrenees and other smaller regions in Spain, Italy, Romania and the Balkans. The scale of the detail of the data varies from one source to another. All this information has been gathered, digitized and combined into one data set. This thesis gives a theoretical overview of the ice distribution in Europe during the LGM (Last Glacial Maximum) and describes how the data was combined, digitized and the missing information modeled. An example of how to visualize this data for the whole of Europe and separately for the Alpine region are presented. Kurzfassung Während des Pleistozän (1,8 Million Jahre v.Chr. bis 10 000 Jahre v. Chr.) gab es mehrere eiszeitliche und zwischeneiszeitliche Perioden. Die letzte Periode, oft auch als letzte Eiszeit genannt, erreichte ihren Höchststand etwa vor 20 000 Jahren. Für Europa wurde eine geografische Datenbank erschaffen, die detaillierte geographische Informationen über diese Zeit enthält. In Europa gibt es mehrere Karten sowie andere Informationsquellen über die letzte Eiszeit. Größte Eisdecken befanden sich über Skandinavien, den Britischen Inseln, Island, den Alpen, den Pyrenäen und weitere kleinere Bereiche über Spanien, Italien, Rumänien und dem Balkan. Es gibt Unterschiede in der Genauigkeit und Menge der Daten. Alle verfügbaren Daten wurden zusammen getragen, digitalisiert und in einen Datensatz zusammengefasst. Diese Arbeit gibt einen theoretischen Überblick über die Verteilung des Eises wäh- rend des letzten Gletscherhochstands, beschreibt wie die Daten zusammengefasst, digitalisiert und die fehlenden Informationen modelliert wurden. Ein Beispiel für die Visualisierung dieser Daten für ganz Europa sowie für die Alpenregion ist vorge- stellt. Content 1 Content Content ......................................................................................................................... 1 Figures .......................................................................................................................... 2 Index of Abbreviations ................................................................................................. 5 Introduction .................................................................................................................. 6 1 Last Glacial Period (LGP) .................................................................................... 7 1.1 Time period of the Last Glacial Maximum (LGM) in Europe ...................... 9 1.2 Ice extent in Europe ..................................................................................... 10 1.3 Determination of former ice location .......................................................... 16 1.3.1 Horizontal extent .................................................................................. 17 1.3.2 Vertical extent ...................................................................................... 19 2 Ice sheets in Europe ............................................................................................ 21 2.1 The Alps ...................................................................................................... 21 2.2 Scandinavia and the British Isles ................................................................. 25 2.3 Smaller glaciated regions ............................................................................ 36 3 Data visualization ............................................................................................... 39 3.1 Software utilized .......................................................................................... 39 3.2 Digitization process ..................................................................................... 40 3.3 Height modeling .......................................................................................... 41 4 Data usage ........................................................................................................... 44 4.1 Paper map .................................................................................................... 44 4.2 Lenticual foil map ....................................................................................... 52 4.3 Further use of the data ................................................................................. 54 Conclusions ................................................................................................................ 55 References .................................................................................................................. 56 Appendix 1 ................................................................................................................. 62 Appendix 2 ................................................................................................................. 64 Figures 2 Figures Figure 1 Division of today’s Ice Age Era (Smart) ....................................................... 7 Figure 2 Ice sheet maximum limits annotated according to when they were attained (Clark, Hughes, Greenwood, Jordan, & Sejrup, 2010) .............................................. 10 Figure 3 Horizontal ice extent during the LGM ......................................................... 11 Figure 4 Horizontal ice extent on the Alpine region (visualized on Google Earth) ... 12 Figure 5 Horizontal ice extent on the Pyrenees Mountains (visualized on Google Earth) .......................................................................................................................... 13 Figure 6 Horizontal ice extent in NW
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